add: extract plain faq

Add Schema Org for FAQ

app/composables/faq.ts

@@ -0,0 +1,20 @@
+import type { MinimalElement, MinimalNode } from '@nuxt/content'
+
+const extractText = (element ?: MinimalNode) : string => {
+  if (!element) return ''
+  if (typeof element === 'string') return element
+  const [,, ...nodes] = element
+  return nodes?.map((el : MinimalNode) => typeof el === 'string' ? el : extractText(el)).join(' ') ?? ''
+}
+
+export const usePlainFaq = (body ?: MinimalNode[]) => {
+  if (!body) return []
+  return body.map(part => {
+    const [, meta] = part as MinimalElement
+    return {
+      question: meta.title,
+      answer: extractText(part).replace(/\n/g, ' ')
+    }
+  })
+}
+